Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1992-11-24
1994-08-09
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250333, 356 5, G01N 2186
Patent
active
053368991
ABSTRACT:
A near infrared illuminator for enhancing viewing of a target viewed with infrared viewing device when the target falls within a predetermined range. A pulse generator generates a laser pulse in the near infrared with a pulse clock for control of laser brightness and a pulse frequency adjust for control of laser blink rate. The pulse is transmitted along an optical path at a specific brightness and blink rate to a target. A detector within the optical path detects a reflected infrared signal from the target and converts the signal to an electrical signal which is processed by a processor to obtain target range information. A trigger logic controls the pulse clock rate means whereby when the target range falls within a predetermined range the laser pulse rate is increased such that increased illumination of the target is viewable with an infrared viewing device.
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Barr Dallas N.
Nettleton John E.
Redman Brian C.
Bashore Alain L.
Lane Anthony T.
Lee Milton W.
Nelms David C.
The United States of America as represented by the Secretary of
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